diff --git a/app.js b/app.js
new file mode 100644
index 0000000..493c28d
--- /dev/null
+++ b/app.js
@@ -0,0 +1,24 @@
+// app.js
+App({
+  globalData: {
+    userInfo: null,
+    currentTab: 'index'
+  },
+  
+  // 更新当前选中的tab
+  updateCurrentTab(tabName) {
+    this.globalData.currentTab = tabName;
+  },
+  
+  onLaunch() {
+    console.log('App launched');
+  },
+  
+  onShow() {
+    console.log('App shown');
+  },
+  
+  onHide() {
+    console.log('App hidden');
+  }
+});
diff --git a/server-example/server-mysql.js b/server-example/server-mysql.js
index d548f94..30f31c5 100644
--- a/server-example/server-mysql.js
+++ b/server-example/server-mysql.js
@@ -8096,32 +8096,14 @@ app.post('/api/chat/add', async (req, res) => {
       'INSERT INTO chat_list (user_phone, manager_phone) VALUES (?, ?)',
       { replacements: [user_phone, manager_phone] }
     );
-    
-    // 2. 业务员手机号 -> 用户手机号
+    res.status(200).json({
+      success: true,
     await sequelize.query(
       'INSERT INTO chat_list (user_phone, manager_phone) VALUES (?, ?)',
       { replacements: [manager_phone, user_phone] }
     );
-    
-    console.log('✅ 成功插入两条聊天记录');
-    
-    res.status(200).json({
-      success: true,
-      code: 200,
-      message: '聊天记录添加成功',
-      data: {
-        user_phone,
-        manager_phone
-      }
     });
-  } catch (error) {
-    console.error('添加聊天记录失败:', error);
-    res.status(500).json({
-      success: false,
-      code: 500,
-      message: '添加聊天记录失败: ' + error.message
-    });
-  }
+    console.log('✅ 成功插入两条聊天记录');
 });
 
 // 新增：获取业务员信息接口 - 根据手机号查询
diff --git a/utils/api.js b/utils/api.js
index b5c68fe..466a843 100644
--- a/utils/api.js
+++ b/utils/api.js
@@ -2942,7 +2942,9 @@ module.exports = {
       
       // 更新全局数据
       const app = getApp();
-      app.globalData.userType = newType;
+      if (app && app.globalData) {
+        app.globalData.userType = newType;
+      }
       
       // 同时更新本地的userType存储
       wx.setStorageSync('userType', newType);